if err := tx.Where(clause.IN{Column: column, Values: values}).Find(joinResults.Addr().Interface()).Error; err != nil {
			return err
		}

		// convert join identity map to relation identity map
		fieldValues := make([]interface{}, len(joinForeignFields))
		joinFieldValues := make([]interface{}, len(joinRelForeignFields))
		for i := 0; i < joinResults.Len(); i++ {

    }
}
```

You should prefer to use managed types when possible. 

#### Identity information 

This is an inappropriate use of lazy types:

```groovy
class Example {
    Provider<String> getPath() {
        return project.provider(() -> path)
    }
}
```

Like above, this is an immutable part of the identity of the domain object and cannot be changed.

### Properties in entirely new classes

        return items.stream()
                .filter(pb -> taskSegment == pb.getTaskSegment())
                .collect(Collectors.toMap(ProjectSegment::getProject, Function.identity()));
    }

    /**
     * Finds the first ProjectSegment matching the supplied project
     * @param mavenProject the requested project
     * @return The projectSegment or null.
     */

 * formed by a combination of group id, artifact id, version and tag. The first three components generally refer to the
 * identity of a model. The tag allows for further classification of the associated data on the sole discretion of the
 * model builder.
 *
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */

   * Arrays#hashCode(Object[])}. Note that array arguments to this method, with the exception of a
   * single Object array, do not get any special handling; their hash codes are based on identity
   * and not contents.
   *
   * <p>This is useful for implementing {@link Object#hashCode()}. For example, in an object that
   * has three properties, {@code x}, {@code y}, and {@code z}, one could write:
   *

 * Object#equals equals} method) to determine equality for keys or values. However, if {@link
 * #weakKeys} was specified, the cache uses identity ({@code ==}) comparisons instead for keys.
 * Likewise, if {@link #weakValues} or {@link #softValues} was specified, the cache uses identity
 * comparisons for values.
 *
 * <p>Entries are automatically evicted from the cache when any of {@link #maximumSize(long)

    }

    @Override
    public int hashCode() {
      return identity;
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof FreshInvocationHandler) {
        FreshInvocationHandler that = (FreshInvocationHandler) obj;
        return identity == that.identity;
      }
      return false;
    }

    @Override
    public String toString() {

  }

  public void testTransform_rejectionPropagatesToOutput() throws Exception {
    SettableFuture<Foo> input = SettableFuture.create();
    Function<Foo, Foo> identity = identity();
    ListenableFuture<Foo> transformed = transform(input, identity, REJECTING_EXECUTOR);
    input.set(new Foo());
    ExecutionException expected =
        assertThrows(ExecutionException.class, () -> getDone(transformed));

  }

  public void testTransform_rejectionPropagatesToOutput() throws Exception {
    SettableFuture<Foo> input = SettableFuture.create();
    Function<Foo, Foo> identity = identity();
    ListenableFuture<Foo> transformed = transform(input, identity, REJECTING_EXECUTOR);
    input.set(new Foo());
    ExecutionException expected =
        assertThrows(ExecutionException.class, () -> getDone(transformed));

}

// Standard errors.
var (
	ErrNotImplemented     = errors.New("function not implemented")
	ErrAccessTokenExpired = errors.New("access_token expired or unauthorized")
)

// Provider implements identity provider specific admin operations, such as
// looking up users, fetching additional attributes etc.
type Provider interface {
	LoginWithUser(username, password string) error