'KeyBuilder' does not contain definition for 'Ignore' in EF Core

[RuiAlias]

Hi, I'm getting the following error with v1.3.0.8pre-2:
'KeyBuilder' does not contain definition for 'Ignore'

I believe the relevant code is

EFDesigner/src/DslPackage/TextTemplates/EFCoreDesigner.ttinclude

Lines 287 to 297 in 9fb90da

	// primary key code segments must be output last, since HasKey returns a different type
	List<ModelAttribute> identityAttributes = modelClass.IdentityAttributes.ToList();
	if (identityAttributes.Count() == 1)
	segments.Add($"HasKey(t => t.{identityAttributes[0].Name})");
	else if (identityAttributes.Count() > 1)
	segments.Add($"HasKey(t => new {{ t.{string.Join(", t.", identityAttributes.Select(ia => ia.Name))} }})");
	}
	}
	foreach (ModelAttribute transient in modelClass.Attributes.Where(x => !x.Persistent))
	segments.Add($"Ignore(t => t.{transient.Name})");