code: func (a *AQL) Bind(name string, value interface{}) *AQL {
  	if a.bindVars == nil {
  		a.bindVars = make(map[string]interface{})
  	}
  	a.bindVars[name] = value
  	return a
  }
docs: // Bind sets the name and value of a bind parameter
  // Binding parameters prevents AQL injection