if (interpolatedModel.getParent() != null) {
            StringSearchInterpolator ssi = new StringSearchInterpolator();
            ssi.addValueSource(new MapBasedValueSource(request.getSession().getUserProperties()));
            ssi.addValueSource(new MapBasedValueSource(model.getProperties()));
            ssi.addValueSource(new MapBasedValueSource(request.getSession().getSystemProperties()));
            try {

</p>

<p>
Implementation restriction: Although numeric constants have arbitrary
precision in the language, a compiler may implement them using an
internal representation with limited precision.  That said, every
implementation must:
</p>

<ul>
	<li>Represent integer constants with at least 256 bits.</li>

	<li>Represent floating-point constants, including the parts of

## Bug Fixes and Other Changes

*   `tf.image`
    *   Added an optional parameter `return_index_map` to `tf.image.ssim` which
        causes the returned value to be the local SSIM map instead of the global
        mean.

*   TF Core:

    *   `tf.custom_gradient` can now be applied to functions that accept