docs: function(chunk, context, bodies, params) {
      if( params && params.key){
        // returns given input as output, if the input is not a dust reference, else does a context lookup
        var key = this.tap(params.key, chunk, context);
        return chunk.render(bodies.block, context.push({ isSelect: true, isResolved: false, selectKey: key }));
      }
      // no key
      else {
        _console.log( "No key given in the select helper!" );
      }
      return chunk;
    }