Method push

cel/fieldpaths.go:40–43

(pathStep string, celType *Type)

}

func (b *backtrack) push(pathStep string, celType *Type) {
	b.path = append(b.path, pathStep)
	b.types = append(b.types, celType)
}

func (b *backtrack) pop() {
	b.path = b.path[:len(b.path)-1]