found = true
				break
			}
		}
		if !found {
			ret = append(ret, observedVersion)
		}
	}

	return ret
}

// IsGroupRegistered returns true if types for the group have been registered with the scheme
func (s *Scheme) IsGroupRegistered(group string) bool {
	for _, observedVersion := range s.observedVersions {
		if observedVersion.Group == group {
			return true
		}
	}
	return false

				return nil, err
			}
			continue
		}

		// If the group is neither a kubeadm core type or of a supported component config group, we dump a warning about it being ignored
		if !componentconfigs.Scheme.IsGroupRegistered(gvk.Group) {
			klog.Warningf("[config] WARNING: Ignored YAML document with GroupVersionKind %v\n", gvk)
		}
	}

	// Enforce that InitConfiguration and/or ClusterConfiguration has to exist among the YAML documents