public virtual EntityTypeBuilder <TEntity> Ignore(Expression <Func <TEntity, object> > propertyExpression)
{
var memberInfo = propertyExpression.GetMemberAccess();
var property = _metadata.FindProperty(memberInfo.GetSimpleMemberName());
if (property == null)
{
// TODO:
}
_metadata.AddIgnored(property.Name);
return(this);
}