Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 12345678]

▼NGoogle
▼NApis
▼NDrive
▼Nv3
▼NData
►CAbout	Information about the user, the user's Drive, and system capabilities.
CDriveThemesData
CStorageQuotaData	The user's storage quota limits and usage. All fields are measured in bytes.
CTeamDriveThemesData
CChange	A change to a file or shared drive.
CChangeList	A list of changes for a user.
CChannel	An notification channel used to watch for resource changes.
►CComment	A comment on a file.
CQuotedFileContentData	The file content to which the comment refers, typically within the anchor region. For a text file, for example, this would be the text at the location of the comment.
CCommentList	A list of comments on a file.
►CDrive	Representation of a shared drive.
CBackgroundImageFileData	An image file and cropping parameters from which a background image for this shared drive is set. This is a write only field; it can only be set on drive.drives.update requests that don't set themeId. When specified, all fields of the backgroundImageFile must be set.
CCapabilitiesData	Capabilities the current user has on this shared drive.
CRestrictionsData	A set of restrictions that apply to this shared drive or items inside this shared drive.
CDriveList	A list of shared drives.
►CFile	The metadata for a file.
CCapabilitiesData	Capabilities the current user has on this file. Each capability corresponds to a fine-grained action that a user may take.
►CContentHintsData	Additional information about the content of the file. These fields are never populated in responses.
CThumbnailData	A thumbnail for the file. This will only be used if Google Drive cannot generate a standard thumbnail.
►CImageMediaMetadataData	Additional metadata about image media, if available.
CLocationData	Geographic location information stored in the image.
CShortcutDetailsData	Shortcut file details. Only populated for shortcut files, which have the mimeType field set to application/vnd.google-apps.shortcut.
CVideoMediaMetadataData	Additional metadata about video media. This may not be available immediately upon upload.
CFileList	A list of files.
CGeneratedIds	A list of generated file IDs which can be provided in create requests.
►CPermission	A permission for a file. A permission grants a user, group, domain or the world access to a file or a folder hierarchy.
CPermissionDetailsData
CTeamDrivePermissionDetailsData
CPermissionList	A list of permissions for a file.
CReply	A reply to a comment on a file.
CReplyList	A list of replies to a comment on a file.
CRevision	The metadata for a revision to a file.
CRevisionList	A list of revisions of a file.
CStartPageToken
►CTeamDrive	Deprecated: use the drive collection instead.
CBackgroundImageFileData	An image file and cropping parameters from which a background image for this Team Drive is set. This is a write only field; it can only be set on drive.teamdrives.update requests that don't set themeId. When specified, all fields of the backgroundImageFile must be set.
CCapabilitiesData	Capabilities the current user has on this Team Drive.
CRestrictionsData	A set of restrictions that apply to this Team Drive or items inside this Team Drive.
CTeamDriveList	A list of Team Drives.
CUser	Information about a Drive user.
▼CAboutResource	The "about" collection of methods.
CGetRequest	Gets information about the user, the user's Drive, and system capabilities.
▼CChangesResource	The "changes" collection of methods.
CGetStartPageTokenRequest	Gets the starting pageToken for listing future changes.
CListRequest	Lists the changes for a user or shared drive.
CWatchRequest	Subscribes to changes for a user.
▼CChannelsResource	The "channels" collection of methods.
CStopRequest	Stop watching resources through this channel
▼CCommentsResource	The "comments" collection of methods.
CCreateRequest	Creates a new comment on a file.
CDeleteRequest	Deletes a comment.
CGetRequest	Gets a comment by ID.
CListRequest	Lists a file's comments.
CUpdateRequest	Updates a comment with patch semantics.
CDriveBaseServiceRequest	A base abstract class for Drive requests.
CDriveService	The Drive Service.
▼CDrivesResource	The "drives" collection of methods.
CCreateRequest	Creates a new shared drive.
CDeleteRequest	Permanently deletes a shared drive for which the user is an organizer. The shared drive cannot contain any untrashed items.
CGetRequest	Gets a shared drive's metadata by ID.
CHideRequest	Hides a shared drive from the default view.
CListRequest	Lists the user's shared drives.
CUnhideRequest	Restores a shared drive to the default view.
CUpdateRequest	Updates the metadate for a shared drive.
▼CFilesResource	The "files" collection of methods.
CCopyRequest	Creates a copy of a file and applies any requested updates with patch semantics.
CCreateMediaUpload	Create media upload which supports resumable upload.
CCreateRequest	Creates a new file.
CDeleteRequest	Permanently deletes a file owned by the user without moving it to the trash. If the file belongs to a shared drive the user must be an organizer on the parent. If the target is a folder, all descendants owned by the user are also deleted.
CEmptyTrashRequest	Permanently deletes all of the user's trashed files.
CExportRequest	Exports a Google Doc to the requested MIME type and returns the exported content. Please note that the exported content is limited to 10MB.
CGenerateIdsRequest	Generates a set of file IDs which can be provided in create or copy requests.
CGetRequest	Gets a file's metadata or content by ID.
CListRequest	Lists or searches files.
CUpdateMediaUpload	Update media upload which supports resumable upload.
CUpdateRequest	Updates a file's metadata and/or content with patch semantics.
CWatchRequest	Subscribes to changes to a file
▼CPermissionsResource	The "permissions" collection of methods.
CCreateRequest	Creates a permission for a file or shared drive.
CDeleteRequest	Deletes a permission.
CGetRequest	Gets a permission by ID.
CListRequest	Lists a file's or shared drive's permissions.
CUpdateRequest	Updates a permission with patch semantics.
▼CRepliesResource	The "replies" collection of methods.
CCreateRequest	Creates a new reply to a comment.
CDeleteRequest	Deletes a reply.
CGetRequest	Gets a reply by ID.
CListRequest	Lists a comment's replies.
CUpdateRequest	Updates a reply with patch semantics.
▼CRevisionsResource	The "revisions" collection of methods.
CDeleteRequest	Permanently deletes a file version. You can only delete revisions for files with binary content in Google Drive, like images or videos. Revisions for other files, like Google Docs or Sheets, and the last remaining file version can't be deleted.
CGetRequest	Gets a revision's metadata or content by ID.
CListRequest	Lists a file's revisions.
CUpdateRequest	Updates a revision with patch semantics.
▼CTeamdrivesResource	The "teamdrives" collection of methods.
CCreateRequest	Deprecated use drives.create instead.
CDeleteRequest	Deprecated use drives.delete instead.
CGetRequest	Deprecated use drives.get instead.
CListRequest	Deprecated use drives.list instead.
CUpdateRequest	Deprecated use drives.update instead