import clr
clr.AddReference('DHI.Solutions.GISManager.Tools.MeshProcessing')
from DHI.Solutions.GISManager.Tools.MeshProcessing import *
from System import *

def DoQueryFeatureClass():
    """
    <Script>
    <Author>admin</Author>
    <Description>Please enter script description here</Description>
    </Script>
    """
    gisModule = app.Modules.Get('GIS Manager')
    mesh = gisModule.DefaultMeshDataProvider.MeshList.Fetch("/MyGroup/flow2")

    tool = app.Tools.CreateNew('QueryFeatureClass')
    tool.InputItems.Add(mesh)
    tool.FeatureClassName = "/MyFeatureClass"
    tool.SelectionVariable = SelectionVariableENUM.Statistic
    tool.Execute()
    return tool.OutputItems