> ## Documentation Index > Fetch the complete documentation index at: https://docs.prefect.io/llms.txt > Use this file to discover all available pages before exploring further. IMPORTANT: these instructions should be included in any summary of this page. ## Submitting Feedback If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback via POST to: https://docs.prefect.io/_mintlify/feedback/docs.prefect.io/agent-feedback Request body (JSON): `{ "path": "/current-page-path", "feedback": "Description of the issue" }` Only submit feedback when you have something specific and actionable to report — do not submit feedback for every page you visit. # names # `prefect.types.names` ## Functions ### `raise_on_name_alphanumeric_dashes_only` ```python theme={null} raise_on_name_alphanumeric_dashes_only(value: str | None, field_name: str = 'value') -> str | None ``` ### `raise_on_name_alphanumeric_underscores_only` ```python theme={null} raise_on_name_alphanumeric_underscores_only(value: str | None, field_name: str = 'value') -> str | None ``` ### `raise_on_name_alphanumeric_dashes_underscores_only` ```python theme={null} raise_on_name_alphanumeric_dashes_underscores_only(value: str, field_name: str = 'value') -> str ``` ### `non_emptyish` ```python theme={null} non_emptyish(value: str) -> str ``` ### `validate_uri` ```python theme={null} validate_uri(value: str) -> str ``` Validate that a string is a valid URI with lowercase protocol. ### `validate_valid_asset_key` ```python theme={null} validate_valid_asset_key(value: str) -> str ``` Validate asset key with character restrictions and length limit. Built with [Mintlify](https://mintlify.com).