[code-reflection] Integrated: Move OpBuilder to internal package.

[Paul Sandoz]

On Thu, 26 Jun 2025 18:16:47 GMT, Paul Sandoz <psandoz at openjdk.org> wrote:

> Move OpBuilder to internal package.

This pull request has now been integrated.

Changeset: b6f0fb10
Author:    Paul Sandoz <psandoz at openjdk.org>
URL:       https://git.openjdk.org/babylon/commit/b6f0fb10a1a1b34fd34b8748238461fade1c9303
Stats:     5 lines in 3 files changed: 2 ins; 1 del; 2 mod

Move OpBuilder to internal package.

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PR: https://git.openjdk.org/babylon/pull/465