The relationship keys of a write condition, by relationship property name.
A BelongsTo or HasOne has one target, which the library resolves, so it takes
a TargetCondition. A HasMany or HasAndBelongsToMany has many, so it
takes RelatedEntityCondition entries naming each one by id.
The relationship keys of a write condition, by relationship property name.
A BelongsTo or HasOne has one target, which the library resolves, so it takes a TargetCondition. A HasMany or HasAndBelongsToMany has many, so it takes RelatedEntityCondition entries naming each one by id.