public String getNamespaceId(String namespaceName) {
        return namespaces.computeIfAbsent(namespaceName, n -> getProjectId(namespaceName, token));
    }
public String getNamespaceId(String namespaceName) {
        return namespaces.computeIfAbsent(namespaceName, n -> getProjectId(namespaceName, token));
    }
public String getNamespaceId ( String namespaceName ) { return namespaces . computeIfAbsent ( namespaceName , n -> getProjectId ( namespaceName , token ) ) ; }
Returns the namespace id for a particular namespace name
@param namespaceName The name of the namespace
@return The id of the namespace or null if the namespace does not exist
Returns the namespace id for a particular namespace name