code: func (p *pathObject) InPredicates() *pathObject {
  	np := p.clonePath().InPredicates()
  	return p.new(np)
  }
docs: // InPredicates gets the list of predicates that are pointing in to a node.
  //
  // Example:
  // 	// javascript
  //	// bob only has "<follows>" predicates pointing inward
  //	// returns "<follows>"
  //	g.V("<bob>").InPredicates().All()