if (createdOnExpression != null) {
query.taskCreatedOnExpression(createdOnExpression);
}
if (delegationState != null) {
DelegationStateConverter converter = new DelegationStateConverter();
DelegationState state = converter.convertQueryParameterToType(delegationState);
query.taskDelegationState(state);
}
if (candidateGroups != null) {
query.taskCandidateGroupIn(candidateGroups);
}