def get_field_errors(self, field):
identifier = format_html('<STR_LIT>', self.form_name, field.name)<EOL>errors = self.errors.get(field.html_name, [])<EOL>return self.error_class([SafeTuple(<EOL>(identifier, self.field_error_css_classes, '<STR_LIT>', '<STR_LIT>', '<STR_LIT>', e)) for e in errors])<EOL>
Return server side errors. Shall be overridden by derived forms to add their
extra errors for AngularJS.