CouldBe indicates a file with the filename could be a template, it is a low cost check before further processing.

RenderToMarkdown renders template to markdown with specified values.

Unmarshal parses out a valid template from the content.

UnmarshalFromCommit parses out a valid template from the commit.

UnmarshalFromEntry parses out a valid template from the blob in entry.

UnmarshalFromRepo parses out a valid template from the head commit of the branch.

Validate checks whether an IssueTemplate is considered valid, and returns the first error.