def repr_vars(self):
d = OrderedDict()<EOL>d["<STR_LIT>"] = repr(self.nullable)<EOL>d["<STR_LIT:default>"] = repr(self.default)<EOL>if self.description is not None:<EOL><INDENT>d["<STR_LIT:description>"] = repr(self.description)<EOL><DEDENT>return d<EOL>
Return a dictionary the field definition

        Should contain all fields that are required for the definition of this field in a pyschema class