MavenSession s = InternalMavenSession.from(session).getMavenSession();
        org.apache.maven.toolchain.ToolchainPrivate tc =
                (org.apache.maven.toolchain.ToolchainPrivate) ((ToolchainWrapper) toolchain).toolchain;
        toolchainManagerPrivate.storeToolchainToBuildContext(tc, s);
    }