code: def check_name_collision( self, name, block_id, checked_ops ):
          
  
          return self.check_collision( "name", name, block_id, checked_ops, OPCODE_NAME_STATE_CREATIONS )
docs: Are there any colliding names in this block?
          Set the '__collided__' flag and related flags if so, so we don't commit them.
          
          Not called directly; called by the @state_create() decorator in blockstack.lib.operations.register