static final String REUSING_EDGE =
      "Edge %s already exists between the following nodes: %s, "
          + "so it cannot be reused to connect the following nodes: %s.";
  static final String MULTIPLE_EDGES_CONNECTING =
      "Cannot call edgeConnecting() when parallel edges exist between %s and %s. Consider calling "
          + "edgesConnecting() instead.";

     *             if the host cannot be resolved to find out.
     */
    boolean isActive ( CIFSContext tc ) throws UnknownHostException;


    /**
     * Determines if this address is set to be permanent.
     * 
     * @param tc
     *            context to use
     * @return whether this address is permanent
     *
     * @throws UnknownHostException
     *             if the host cannot be resolved to find out.

        "The system cannot find the file specified.", "The system cannot find the file specified.", "End of file", "More data is available.",
        "Access is denied.", "The data area passed to a system call is too small.",
        "The filename, directory name, or volume label syntax is incorrect.", "The system cannot find the file specified.",

     *
     * @param request {@link ProjectBuilderRequest}
     * @return the {@link ProjectBuilderResult} containing the built project and possible errors
     * @throws ProjectBuilderException if the project cannot be created
     * @throws IllegalArgumentException if an argument is {@code null} or invalid
     */
    @Nonnull
    ProjectBuilderResult build(ProjectBuilderRequest request);

    /**

  It is more than simply understanding that m2 cannot go and check for the
  latest version of some snapshot artifact. If m2 is offline, SCM operations
  cannot succeed; no artifact downloads can take place, regardless of whether
  they are snapshot versions; artifact deployment cannot take place; certain
  types of tests cannot be setup, since the container used to run them cannot be
  reached or started.

        return builder()
                .session(nonNull(session, "session cannot be null"))
                .repository(nonNull(repository, "repository cannot be null"))
                .artifacts(nonNull(artifacts, "artifacts cannot be null"))
                .build();
    }

    class ArtifactDeployerRequestBuilder {
        Session session;

        this.project = Objects.requireNonNull(project, "project cannot be null");
        this.projectBuildingHelper =
                Objects.requireNonNull(projectBuildingHelper, "projectBuildingHelper cannot be null");
        this.projectBuildingRequest =
                Objects.requireNonNull(projectBuildingRequest, "projectBuildingRequest cannot be null");
        this.remoteRepositories = projectBuildingRequest.getRemoteRepositories();

                .session(nonNull(session, "session cannot be null"))
                .rootArtifact(nonNull(root, "root cannot be null"))
                .build();
    }

    @Nonnull
    static DependencyCollectorRequest build(@Nonnull Session session, @Nonnull DependencyCoordinate root) {
        return builder()
                .session(nonNull(session, "session cannot be null"))

   * null will be returned.
   *
   * @throws ParameterNotInstantiableException if the static methods cannot be invoked because the
   *     default value of a parameter cannot be determined.
   * @throws IllegalAccessException if the class isn't public or is nested inside a non-public
   *     class, preventing its methods from being accessible.

                .session(nonNull(session, "session cannot be null"))
                .source(nonNull(source, "source cannot be null"))
                .build();
    }

    @Nonnull
    static ProjectBuilderRequest build(@Nonnull Session session, @Nonnull Path path) {
        return builder()
                .session(nonNull(session, "session cannot be null"))
                .path(nonNull(path, "path cannot be null"))
                .build();
    }