ToolchainPrivate basicToolchain = mock(ToolchainPrivate.class);
        when(toolchainFactory_basicType.createDefaultToolchain()).thenReturn(basicToolchain);
        ToolchainPrivate rareToolchain = mock(ToolchainPrivate.class);
        when(toolchainFactory_rareType.createDefaultToolchain()).thenReturn(rareToolchain);

        // execute

    /**
     * Returns the default instance of the particular type of toolchain, can return <code>null</code>
     * if not applicable.
     * TODO keep around??
     **/
    ToolchainPrivate createDefaultToolchain();

                    toRet.add(fact.createToolchain(tm));
                }
            }

            // add default toolchain
            ToolchainPrivate tool = fact.createDefaultToolchain();
            if (tool != null) {
                toRet.add(tool);
            }
        }

        return toRet.toArray(new ToolchainPrivate[0]);
    }

    @Override

                    "Non-existing JDK home configuration at " + normal.toAbsolutePath());
        }

        return jtc;
    }

    public ToolchainPrivate createDefaultToolchain() {
        // not sure it's necessary to provide a default toolchain here.
        // only version can be eventually supplied, and
        return null;
    }

    protected Logger getLogger() {

            builder.defaultImplementation(DefaultNativeExecutableBinarySpec.class);
            builder.internalView(NativeExecutableBinarySpecInternal.class);
        }

        @Finalize
        public void createDefaultToolChain(NativeToolChainRegistryInternal toolChains) {
            if (toolChains.isEmpty()) {
                toolChains.addDefaultToolChains();
            }
        }

        @Finalize