For example, if a table called "MEMBER" exists,
you can use these classes like this:
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memberBhv.selectEntity(cb -> {
    cb.query().setMemberId_Equal(3);
}).alwaysPresent(member -> {
    ... = member.getMemberName();
});
// memberBhv      : Behavior (instance)
// MemberCB(cb)   : ConditionBean
// Member(member) : Entity
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