public void adjustIndentation(int delta){
  if (delta < 0) {
    indentationLevel=Math.max(0,indentationLevel + delta);
  }
 else {
    indentationLevel+=delta;
  }
}

public void adjustIndentation ( int delta ) { if ( delta < 0 ) { indentationLevel = Math . max ( 0 , indentationLevel + delta ) ; } else { indentationLevel += delta ; } }
adjusts the current indentation level of this log stream .
