code: public boolean removeCssProperty(final String cssName,
              final String cssValue) {
          final long stamp = lock.writeLock();
          try {
  
              final boolean removed = removeCssPropertyNotFromSuperLockless(
                      cssName, cssValue);
              if (removed) {
                  super.removeFromAttributeValueMap(cssName);
              }
              return removed;
          } finally {
              lock.unlockWrite(stamp);
          }
      }
docs: removes only if it contains the given style name and value.
  
  @param cssName
  eg: color
  @param cssValue
  eg: green (for color styleName)
  @since 1.0.0
  @return true if the given syleName (as well as value contained
  corresponding to it) has been removed, or false if it doesn't
  contain the given styleName and value.
  @author WFF