Function registerHandler

registerHandler(
    commandId: string,
    handler: (...args: any[]) => any,
    thisArg?: any,
): Disposable
Register the given handler for the given command identifier.
Parameters
- commandId: string
  a given command id
- handler: (...args: any[]) => any
  a command handler
  
  Throw if a handler for the given command identifier is already registered.
- OptionalthisArg: any
Returns Disposable
- Defined in packages/plugin/src/theia.d.ts:2536