@Nullable
  private static String _getAttributeValue (@Nullable final String sAttrValue)
  {
    return sAttrValue == null ? null : sAttrValue.trim ();
  }
@Nullable
  private static String _getAttributeValue (@Nullable final String sAttrValue)
  {
    return sAttrValue == null ? null : sAttrValue.trim ();
  }
@ Nullable private static String _getAttributeValue ( @ Nullable final String sAttrValue ) { return sAttrValue == null ? null : sAttrValue . trim ( ) ; }
Utility method to get a real attribute value, by trimming spaces, if the
value is non-<code>null</code>.

@param sAttrValue
The source attribute value. May be <code>null</code>.
@return <code>null</code> if the input parameter is <code>null</code>.
Utility method to get a real attribute value by trimming spaces if the value is non - <code > null< / code > .