func mime.setExtensionType

4 uses

	mime (current package)
		type.go#L165: 	return setExtensionType(ext, typ)
		type.go#L168: func setExtensionType(extension, mimeType string) error {
		type_unix.go#L71: 		setExtensionType(extension, fields[1])
		type_unix.go#L97: 			setExtensionType("."+ext, mimeType)