<s> '''<STR_LIT>''' <EOL> from FeatureServer . WebFeatureService . FilterEncoding . ComparisonOperators . ComparisonOperator import ComparisonOperator <EOL> class PropertyIsNull ( ComparisonOperator ) : <EOL> '''<STR_LIT:U+0020>''' <EOL> def getPropertyName ( self ) : return str ( self . node . PropertyName ) </s>
