OptionalblockOptionaljoinIf set, also join the call, otherwise just create the call link.
OptionalmutedIf set, mute our microphone when joining the call (can only be used if join is set).
OptionalparamsParameters from tgcalls (can only be used if join is set).
OptionalpublicPublic key (can only be used if join is set).
Unique client message ID required to prevent creation of duplicate group calls.
OptionalvideoIf set, our video stream is disabled (can only be used if join is set).
Initial blockchain block (can only be used if join is set).