public @Nullable MetaTypeProxy getMetaTypeProxy(@NotNull PsiElement psi) {
    if (psi instanceof YAMLValue) {
      return getValueMetaType((YAMLValue)psi);
    }
    YAMLValue metaOwner = getMetaOwner(psi);
    return metaOwner == null ? null : getValueMetaType(metaOwner);
  }
public @Nullable MetaTypeProxy getMetaTypeProxy(@NotNull PsiElement psi)