Refine FileMetadata display name APIs and update UI consumers.

Refine FileMetadata display name APIs and update UI consumers.

Refine FileMetadata display name APIs and update UI consumers.

Refine FileMetadata display name APIs and update UI consumers.

Refine FileMetadata display name APIs and update UI consumers.

Add stack adjustment helper.

Increment SESSION_COUNT when cloning a Session.

Fixes #8166.

Increment SESSION_COUNT when cloning a Session.

Fixes #8166.

include mock extension server and update plugin writing docs

changed "There's" to "There are" (grammar)