#NEWLINE# def __init__( self , field_name , diff_datasource , name = None ) : #NEWLINE# #INDENT# self . field_name = field_name #NEWLINE# name = self . _format_name ( name , [ field_name , diff_datasource ] ) #NEWLINE# super ( ) . __init__ ( name , self . process , depends_on = [ diff_datasource ] )