code: function( elems, name, selector ) {
  		// Build a new jQuery matched element set
  		var ret = jQuery( elems );
  
  		// Add the old object onto the stack (as a reference)
  		ret.prevObject = this;
  
  		ret.context = this.context;
  
  		if ( name === "find" )
  			ret.selector = this.selector + (this.selector ? " " : "") + selector;
  		else if ( name )
  			ret.selector = this.selector + "." + name + "(" + selector + ")";
  
  		// Return the newly-formed element set
  		return ret;
  	}
docs: Take an array of elements and push it onto the stack (returning the new matched element set)