partial class Examples
{
  public static Rhino.Commands.Result TransformBrep(Rhino.RhinoDoc doc)
  {
    Rhino.DocObjects.ObjRef rhobj;
    var rc = RhinoGet.GetOneObject("Select brep", true, Rhino.DocObjects.ObjectType.Brep, out rhobj);
    if(rc!= Rhino.Commands.Result.Success)
      return rc;

    // Simple translation transformation
    var xform = Rhino.Geometry.Transform.Translation(18,-18,25);
    doc.Objects.Transform(rhobj, xform, true);
    doc.Views.Redraw();
    return Rhino.Commands.Result.Success;
  }
}

Partial Friend Class Examples
  Public Shared Function TransformBrep(ByVal doc As Rhino.RhinoDoc) As Rhino.Commands.Result
	Dim rhobj As Rhino.DocObjects.ObjRef = Nothing
	Dim rc = RhinoGet.GetOneObject("Select brep", True, Rhino.DocObjects.ObjectType.Brep, rhobj)
	If rc IsNot Rhino.Commands.Result.Success Then
	  Return rc
	End If

	' Simple translation transformation
	Dim xform = Rhino.Geometry.Transform.Translation(18,-18,25)
	doc.Objects.Transform(rhobj, xform, True)
	doc.Views.Redraw()
	Return Rhino.Commands.Result.Success
  End Function
End Class

import Rhino
import scriptcontext

def TransformBrep():
    rc, objref = Rhino.Input.RhinoGet.GetOneObject("Select brep", True, Rhino.DocObjects.ObjectType.Brep)
    if rc!=Rhino.Commands.Result.Success: return

    # Simple translation transformation
    xform = Rhino.Geometry.Transform.Translation(18,-18,25)
    scriptcontext.doc.Objects.Transform(objref, xform, True)
    scriptcontext.doc.Views.Redraw()

if __name__=="__main__":
    TransformBrep()