=> #<User:0x29431a4 @attributes={.....}>
>> z.methods.sort
=> ["==", "===", "=~", "[]", "[]=", "__id__", "__send__", "`", "acts_as_taggable_options", "add_taggings", "add_user_hangout_tags", "add_user_online_tags", "add_user_self_tags", "add_user_status_tags", "after_create", "after_destroy", "after_save", "after_update", "after_validation", "after_validation_on_create", "after_validation_on_update", "allow_concurrency", "allow_concurrency=", "attribute_names", "attribute_present?", "attributes", "attributes=", "attributes_before_type_cast", "b64encode", "before_create", "before_destroy", "before_save", "before_update", "before_validation", "before_validation_on_create", "before_validation_on_update", "blank?", "build_image", "build_metro", "build_to_taggings", "build_to_user_hangout_tags", "build_to_user_online_tags", "build_to_user_self_tags", "build_to_user_status_tags", "cache_delete", "cache_key_local", "cache_key_memcache", "cache_local", "cache_store", "change_password", "class", "clear_aggregation_cache", "clear_association_cache", "clone", "colorize_logging", "colorize_logging=", "column_for_attribute", "configurations", "configurations=", "connection", "copy_instance_variables_from", "create", "create_image", "create_in_taggings", "create_in_user_hangout_tags", "create_in_user_online_tags", "create_in_user_self_tags", "create_in_user_status_tags", "create_metro", "create_or_update", "create_or_update_with_callbacks", "create_with_callbacks", "create_with_timestamps", "create_without_timestamps", "crypt_password", "daemonize", "dclone", "decode64", "decode_b", "decrement", "decrement!", "default_timezone", "default_timezone=", "destroy", "destroy_with_callbacks", "destroy_with_transactions", "destroy_without_callbacks", "destroy_without_transactions", "display", "dup", "email_confirmation", "email_confirmation=", "enable_warnings", "encode64", "eql?", "equal?", "errors", "extend", "extend_with_included_modules_from", "extended_by", "find_all_in_taggings", "find_all_in_user_hangout_tags", "find_all_in_user_online_tags", "find_all_in_user_self_tags", "find_all_in_user_status_tags", "find_in_taggings", "find_in_user_hangout_tags", "find_in_user_online_tags", "find_in_user_self_tags", "find_in_user_status_tags", "freeze", "frozen?", "generate_read_methods", "generate_read_methods=", "generate_security_token", "has_attribute?", "has_image?", "has_metro?", "has_taggings?", "has_user_hangout_tags?", "has_user_online_tags?", "has_user_self_tags?", "has_user_status_tags?", "hash", "id", "id=", "id_before_type_cast", "image", "image=", "image?", "increment", "increment!", "initialize_with_callbacks", "inspect", "instance_eval", "instance_exec", "instance_of?", "instance_values", "instance_variable_get", "instance_variable_set", "instance_variables", "invite_code", "invite_code=", "is_a?", "kind_of?", "load", "lock_optimistically", "lock_optimistically=", "locking_enabled?", "logger", "logger=", "method", "methods", "metro", "metro=", "metro?", "new_email", "new_email=", "new_password", "new_password=", "new_record?", "new_security_token", "nil?", "object_id", "password", "password=", "password_confirmation", "password_confirmation=", "pluralize_table_names", "pluralize_table_names=", "primary_key_prefix_type", "primary_key_prefix_type=", "private_methods", "protected_methods", "public_methods", "quoted_id", "readonly!", "readonly?", "record_timestamps", "record_timestamps=", "reload", "remove_subclasses_of", "remove_taggings", "remove_user_hangout_tags", "remove_user_online_tags", "remove_user_self_tags", "remove_user_status_tags", "require", "require_gem", "require_gem_with_options", "require_library_or_gem", "reset_flags", "respond_to?", "respond_to_without_attributes?", "returning", "save", "save!", "save_with_transactions", "save_with_validation", "save_with_validation!", "save_without_transactions", "save_without_validation", "save_without_validation!", "schema_format", "schema_format=", "send", "set_delete_after", "set_image_target", "set_metro_target", "silence_stderr", "silence_stream", "silence_warnings", "singleton_methods", "subclasses_of", "suppress", "table_name_prefix", "table_name_prefix=", "table_name_suffix", "table_name_suffix=", "tagging_ids=", "taggings", "taggings=", "taggings_count", "taguri", "taguri=", "taint", "tainted?", "terms_of_use", "terms_of_use=", "to_a", "to_json", "to_param", "to_s", "to_xml", "to_yaml", "to_yaml_properties", "to_yaml_style", "toggle", "toggle!", "token_expired?", "token_lifetime", "transaction", "type", "untaint", "update", "update_attribute", "update_attribute_with_validation_skipping", "update_attribute_without_validation_skipping", "update_attributes", "update_expiry", "update_with_callbacks", "update_with_lock", "update_with_timestamps", "update_without_callbacks", "update_without_timestamps", "user_hangout_tag_with", "user_hangout_tags", "user_hangout_tags_count", "user_online_tag_with", "user_online_tags", "user_online_tags_count", "user_self_tag_with", "user_self_tags", "user_self_tags_count", "user_status_tag_with", "user_status_tags", "user_status_tags_count", "valid?", "valid_terms_of_use?", "valid_with_callbacks", "valid_without_callbacks", "validate", "validate_associated_records_for_taggings", "validate_email?", "validate_invite_code?", "validate_on_create", "validate_on_update", "validate_password?", "verification_timeout", "verification_timeout=", "with_options"]