public String set(final String name, final String value) {
		final ConfigBlock block = this.getByName(name);
		if (block instanceof ConfigItem) {
			final ConfigItem item = (ConfigItem) block;
			final String previousValue = item.getValue();
			item.setValue(value);
			return previousValue;
		}
		return null;
	}
public String set ( final String name , final String value ) { final ConfigBlock block = this . getByName ( name ) ; if ( block instanceof ConfigItem ) { final ConfigItem item = ( ConfigItem ) block ; final String previousValue = item . getValue ( ) ; item . setValue ( value ) ; return previousValue ; } return null ; }
@param name the name
@param value the new value
@return the previous value, null if the ConfigBlock has another name or isn't a ConfigItem