if (versionMatcher.matches(PlatformVersion)) {
          val description = StringDescription()
          versionMatcher.describeTo(description)
          description.appendText(" expected to fail with exception that ")
          failureMatcher.describeTo(description)

          fail<Any>(description.toString())
        }
      }
    }

                StringBuilder sb = new StringBuilder();
                ruleDefinition.getDescriptor().describeTo(sb);
                sb.append(String.format(" is not a valid %s model rule method.", modelName));
                return new InvalidModelRuleDeclarationException(sb.toString(), e);
            }
        }
    }

        modelRegistry.transition(this, state, true);
    }

    private static String describe(ModelRuleDescriptor descriptor) {
        StringBuilder stringBuilder = new StringBuilder();
        descriptor.describeTo(stringBuilder);
        return stringBuilder.toString();
    }

            this.version = version;
        }


        @Override
        public String getDisplayName() {
            TreeFormatter formatter = new TreeFormatter();
            version.describeTo(formatter);
            return "version " + formatter;
        }
    }

    private static class RejectedBySelectorReason implements Describable {

        private final Collection<String> rejectedVersions;

    }

    private static Matcher<PatternMatcher> matches(final String[] segments, final boolean isFile) {
        return new BaseMatcher<PatternMatcher>() {
            public void describeTo(Description description) {
                description.appendText("matches ").appendValue(Joiner.on("/").join(segments));
            }

            public boolean matches(Object o) {

                    return false
                }
                assertHasConsoleSummary(item.toString(), spec)
                return true
            }

            @Override
            void describeTo(Description description) {
                description.appendText("contains expected problems")
            }
        }
    }

    private static void assertNoProblemsSummary(String text) {

                if (!details.rule.getRuleDependencies().isEmpty()) {
                    StringBuilder message = new StringBuilder();
                    details.method.getDescriptor().describeTo(message);
                    message.append(" has dependencies on plugins: ");
                    message.append(details.rule.getRuleDependencies());

                allDiagnostics.add(details.source.healthDiagnostics());
            }
            for (WorkSource.Diagnostics diagnostics : allDiagnostics) {
                diagnostics.describeTo(formatter);
            }
        }
    }

    private static class ExecutorWorker implements Runnable {
        private final MergedQueues queue;
        private WorkerLease workerLease;

                    action.accept(failure);
                    return;
                }
            }
            StringDescription description = new StringDescription();
            matcher.describeTo(description);
            throw new AssertionFailedError(String.format("Could not find any failure with description %s, failures:%s\n", description, Joiner.on("\n").join(failures)));
        }

        @Override