parameters: (self)
return_statement: return self.lhs in self.queryables
docstring: return True if this is a valid field
docstring_summary: return True if this is a valid field
docstring_tokens: return True if this is a valid field
function: def is_valid(self) -> bool:
          """return True if this is a valid field"""
          return self.lhs in self.queryables
function_tokens: def is_valid ( self ) -> bool : return self . lhs in self . queryables