@Nonnull
  public static EChange setPropertyValue (@Nonnull final String sKey, final long nValue)
  {
    return setPropertyValue (sKey, Long.toString (nValue));
  }
@ Nonnull public static EChange setPropertyValue ( @ Nonnull final String sKey , final long nValue ) { return setPropertyValue ( sKey , Long . toString ( nValue ) ) ; }
Set a system property value under consideration of an eventually present
{@link SecurityManager}.

@param sKey
The key of the system property. May not be <code>null</code>.
@param nValue
The value of the system property.
@since 8.5.7
@return {@link EChange}