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private IEditingDomainItemProvider getItemProvider(EObject element_p) {
  IEditingDomainItemProvider result = null;
  AdapterFactoryEditingDomain editingDomain = (AdapterFactoryEditingDomain) AdapterFactoryEditingDomain.getEditingDomainFor(element_p);
  if (null != editingDomain) {
    result = (IEditingDomainItemProvider) editingDomain.getAdapterFactory().adapt(element_p, IEditingDomainItemProvider.class);
  }
  return result;
}

IEditingDomainItemProvider provider = getItemProvider(element);
parent = provider.getParent(element);