code: public Integer getIntAttribute(String name, Integer defaultValue) {
          return getValue(intAttributes, name, defaultValue);
      }
docs: Gets the int value of an attribute.
  @param name The name of the attribute.  Not null.
  @param defaultValue The default value for the attribute.  May be null.  This value will be returned if this
  metadata object does not contain an int value for the specified attribute name.
  @return Either the int value of the attribute with the specified name, or the value specified by the defaultValue
  object if this metadata object does not contain an int value for the specified attribute name.
  @throws NullPointerException if name is null.