Function registerCommand

registerCommand(
    command: string | CommandDescription,
    handler?: (...args: any[]) => any,
    thisArg?: any,
): Disposable
Register the given command and handler if present.

Throw if a command is already registered for the given command identifier.
Parameters
- command: string | CommandDescription
- Optionalhandler: (...args: any[]) => any
- OptionalthisArg: any
Returns Disposable
- Defined in packages/plugin/src/theia.d.ts:2526