Parse returns the body file path from Resterm's "< path" body reference syntax.
Options controls where to look for "<" and whether body file references are
disabled for the current body.
ParseBodyFile returns a body file path from a protocol body line. It accepts
standalone "< path" references and directive-style "@name < path" references.
const (
// Line parses a standalone body reference line, e.g. "< ./payload.json". Line Location = iota// Inline parses a body reference embedded in an at-prefixed line, e.g. "@query < ./query.graphql". Inline
)