internal override bool ShouldCloneXmlAttribute(XmlAttributeLink attributeLink) => !ProjectMetadataElement.AttributeNameIsValidMetadataName(attributeLink.LocalName);
 /// <summary>
 /// Do not clone attributes which can be metadata. The corresponding expressed as attribute project elements are responsible for adding their attribute
 /// </summary>
 protected override bool ShouldCloneXmlAttribute(XmlAttribute attribute) => !ProjectMetadataElement.AttributeNameIsValidMetadataName(attribute.LocalName);