How to use

getInstance

method

in

org.jboss.forge.furnace.versions.EmptyVersion

@Override
public Version getMin()
{
 return EmptyVersion.getInstance();
}

@Override
public Version getMax()
{
 return EmptyVersion.getInstance();
}

public static Version getRuntimeAPIVersion()
{
  String version = Bootstrap.class.getPackage().getImplementationVersion();
  if (version != null)
  {
    return SingleVersion.valueOf(version);
  }
  return EmptyVersion.getInstance();
}

public static Version getRuntimeAPIVersion()
{
  String version = Bootstrap.class.getPackage().getImplementationVersion();
  if (version != null)
  {
    return SingleVersion.valueOf(version);
  }
  return EmptyVersion.getInstance();
}

/**
* Create an {@link AddonId} from the given name, {@link Version}, and API {@link Version}.
*/
public static AddonId from(String name, Version version, Version apiVersion)
{
 Assert.notNull(name, "Name cannot be null.");
 if (name.trim().isEmpty())
   throw new IllegalArgumentException("Name cannot be empty.");
 Assert.notNull(version, "Version cannot be null.");
 if (version.toString().trim().isEmpty())
   throw new IllegalArgumentException("Version cannot be empty.");
 AddonId id = new AddonId();
 id.name = name;
 id.version = version;
 if (apiVersion == null || apiVersion.toString().trim().isEmpty())
   id.apiVersion = EmptyVersion.getInstance();
 else
   id.apiVersion = apiVersion;
 return id;
}

/**
* Returns the Implementation version for the given {@link Class}
* 
* @param type the {@link Class} with the corresponding package
* @return {@link Version} representation from the {@link Package#getImplementationVersion()} returned from
*         {@link Class#getPackage()}
*/
public static Version getImplementationVersionFor(Class<?> type)
{
 Assert.notNull(type, "Type must not be null.");
 final Version result;
 Package pkg = type.getPackage();
 if (pkg == null)
 {
   result = EmptyVersion.getInstance();
 }
 else
 {
   String version = pkg.getImplementationVersion();
   if (Strings.isNullOrEmpty(version))
   {
    result = EmptyVersion.getInstance();
   }
   else
   {
    result = SingleVersion.valueOf(version);
   }
 }
 return result;
}

/**
* Create an {@link AddonId} from the given name, version, and API version.
*/
public static AddonId from(String name, String version, String apiVersion)
{
 Assert.notNull(name, "Name cannot be null.");
 if (name.trim().isEmpty())
   throw new IllegalArgumentException("Name cannot be empty.");
 Assert.notNull(version, "Version cannot be null.");
 if (version.trim().isEmpty())
   throw new IllegalArgumentException("Version cannot be empty.");
 AddonId id = new AddonId();
 id.name = name;
 id.version = SingleVersion.valueOf(version);
 if (apiVersion == null || apiVersion.trim().isEmpty())
   id.apiVersion = EmptyVersion.getInstance();
 else
   id.apiVersion = SingleVersion.valueOf(apiVersion);
 return id;
}

/**
* Returns the Specification version for the given {@link Class}
* 
* @param type the {@link Class} with the corresponding package
* @return {@link Version} representation from the {@link Package#getSpecificationVersion()} returned from
*         {@link Class#getPackage()}
*/
public static Version getSpecificationVersionFor(Class<?> type)
{
 Assert.notNull(type, "Type must not be null.");
 final Version result;
 Package pkg = type.getPackage();
 if (pkg == null)
 {
   result = EmptyVersion.getInstance();
 }
 else
 {
   String version = pkg.getSpecificationVersion();
   if (Strings.isNullOrEmpty(version))
   {
    result = EmptyVersion.getInstance();
   }
   else
   {
    result = SingleVersion.valueOf(version);
   }
 }
 return result;
}

if (resolveAddonAPIVersions && (addonAPIVersion == null || EmptyVersion.getInstance().equals(addonAPIVersion)))