class GraphQL::StaticValidation::VariableUsagesAreAllowed

def create_error(error_message, var_type, ast_var, arg_defn, arg_node, context)
  message("#{error_message} on variable $#{ast_var.name} and argument #{arg_node.name} (#{var_type.to_s} / #{arg_defn.type.to_s})", arg_node, context: context)
end