mergeFromMessage method
      
void
mergeFromMessage(
    
- GeneratedMessage other
inherited
    Merges the contents of the other into this message.
Singular fields that are set in other overwrite the corresponding fields
in this message. Repeated fields are appended. Singular sub-messages are
recursively merged.
Implementation
@pragma('dart2js:noInline')
void mergeFromMessage(GeneratedMessage other) =>
    _fieldSet._mergeFromMessage(other._fieldSet);