// If set, comments that are not associated with a specific
	// AST node (as Doc or Comment) are excluded.
	FilterUnassociatedComments
	// If set, duplicate import declarations are excluded.
	FilterImportDuplicates
)

// nameOf returns the function (foo) or method name (foo.bar) for
// the given function declaration. If the AST is incorrect for the
// receiver, it assumes a function instead.