code: function( propertyTable, eid ) {
  		// Check if we have a BST for this type
  		if (this.indexVal[eid] !== undefined) {
  			var id = this.indexVal[eid].search( propertyTable );
  			if (id.length > 0) return id[0];
  		}
  		// We don't have the item or the BST
  		return -1;
  	}
docs: Lookup if that object already exits in the i-ref table
  and return it's ID, using it's values and not it's contents.