String rawChildModelVersion = childModel.getVersion();

                if (rawChildModelVersion == null) {
                    // Message below is checked for in the MNG-2199 core IT.
                    problems.add(
                            Severity.FATAL,
                            ModelProblem.Version.V31,
                            "Version must be a constant",

class VersionRangeTest {
    private static final String CHECK_NUM_RESTRICTIONS = "check number of restrictions";

    private static final String CHECK_UPPER_BOUND = "check upper bound";

    private static final String CHECK_UPPER_BOUND_INCLUSIVE = "check upper bound is inclusive";

    private static final String CHECK_LOWER_BOUND = "check lower bound";

    private static final String CHECK_LOWER_BOUND_INCLUSIVE = "check lower bound is inclusive";

        assertEquals(createSet(artifacts), res.getArtifacts(), "Check artifact list");
        assertEquals("1.0", getArtifact("d", res.getArtifacts()).getVersion(), "Check version");
        assertEquals("2.0", getArtifact("b", res.getArtifacts()).getVersion(), "Check version");
    }

    @Test

<!DOCTYPE suppressions PUBLIC
        "-//Checkstyle//DTD SuppressionFilter Configuration 1.0//EN"
        "https://checkstyle.org/dtds/suppressions_1_0.dtd">

<suppressions>
    <suppress checks="JavadocVariable|JavadocMethod" files=".*" />
    <suppress checks="HiddenField" files=".*" />

            // Check if the project is being built during this session, and if we can expect any output.
            // There is no need to check if the build has created any outputs, see MNG-2222.
            boolean projectCompiledDuringThisSession =
                    project.hasLifecyclePhase("compile") && COMPILE_PHASE_TYPES.contains(type);

     * given OS family derived from the given OS name
     *
     * @param family the family to check for
     * @param actualOsName the OS name to check against
     * @return true if the OS matches
     *
     */
    public static boolean isFamily(String family, String actualOsName) {
        // windows probing logic relies on the word 'windows' in the OS

     * Retrieves the current Maven version, for example "3.0.2".
     *
     * @return The current Maven version or an empty string if unknown, never {@code null}.
     */
    String getMavenVersion();

    /**
     * Checks whether the current Maven runtime matches the specified version range. A version range can either use the
     * usual mathematical syntax "[2.0.10,2.1.0),[3.0,)" or use a single version "2.2.1". The latter is a short form for

  + Create minimal diffs - disable on save actions like reformat source code or organize imports.
    If you feel the source code should be reformatted, create a separate PR for this change.
  + Check for unnecessary whitespace with `git diff --check` before committing.
+ Make sure your commit messages are in the proper format. Your commit message should contain the key of the JIRA issue.
```
[MNG-XXX] - Subject of the JIRA Ticket

     * @throws VersionParserException if the range specification violates the syntax rules of this scheme
     */
    @Nonnull
    VersionConstraint parseVersionConstraint(@Nonnull String constraint);

    /**
     * Checks whether a given artifact version is considered a {@code SNAPSHOT} or not.
     */
    boolean isSnapshot(@Nonnull String version);

 * commandline
 */
public interface ModelVersionProcessor {

    /**
     * @param property the property to check
     * @return <code>true</code> if this is a valid property for this processor
     */
    boolean isValidProperty(String property);

    /**