code: @Override
      public boolean setMultiplier(IAtomContainer container, Double multiplier) {
          for (int i = 0; i < atomContainers.length; i++) {
              if (atomContainers[i] == container) {
                  multipliers[i] = multiplier;
                  return true;
              }
          }
          return false;
      }
docs: Sets the coefficient of a AtomContainer to a given value.
  
  @param  container   The AtomContainer for which the multiplier is set
  @param  multiplier  The new multiplier for the AtomContatiner
  @return             true if multiplier has been set
  @see                #getMultiplier(IAtomContainer)