code: public static int getInt(@NonNull final Context context, @AttrRes final int resourceId,
                               final int defaultValue) {
          return getInt(context, -1, resourceId, defaultValue);
      }
docs: Obtains the integer value, which corresponds to a specific resource id, from a context's
  theme.
  
  @param context
  The context, which should be used, as an instance of the class {@link Context}. The
  context may not be null
  @param resourceId
  The resource id of the attribute, which should be obtained, as an {@link Integer}
  value. The resource id must corresponds to a valid theme attribute
  @param defaultValue
  The default value, which should be returned, if the given resource id is invalid, as
  an {@link Integer} value
  @return The integer value, which has been obtained, as an {@link Integer} value or 0, if the
  given resource id is invalid