code: @Override
  	public CPDefinitionLink findByPrimaryKey(Serializable primaryKey)
  		throws NoSuchCPDefinitionLinkException {
  		CPDefinitionLink cpDefinitionLink = fetchByPrimaryKey(primaryKey);
  
  		if (cpDefinitionLink == null) {
  			if (_log.isDebugEnabled()) {
  				_log.debug(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY + primaryKey);
  			}
  
  			throw new NoSuchCPDefinitionLinkException(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY +
  				primaryKey);
  		}
  
  		return cpDefinitionLink;
  	}
docs: Returns the cp definition link with the primary key or throws a {@link com.liferay.portal.kernel.exception.NoSuchModelException} if it could not be found.
  
  @param primaryKey the primary key of the cp definition link
  @return the cp definition link
  @throws NoSuchCPDefinitionLinkException if a cp definition link with the primary key could not be found