default double getDouble(final @Range(from = 0, to = Integer.MAX_VALUE) int index) {
    return this.getDouble(index, 0d);
  }
Gets a double.

@param index the index
@return the double value, or {@code 0}
@since 4.0.0
nbt/src/main/java/net/kyori/adventure/nbt/ListBinaryTag.java