code: public AT_Row setPadding(int padding){
  		if(this.hasCells()){
  			for(AT_Cell cell : this.getCells()){
  				cell.getContext().setPadding(padding);
  			}
  		}
  		return this;
  	}
docs: Sets all padding for all cells in the row to the same value.
  @param padding new padding for top, bottom, left, and right, ignored if smaller than 0
  @return this to allow chaining