/// <summary>
/// Appends the specified object to the specified string buffer using the
/// rules of this format.
/// <para/>
/// <paramref name="field"/> is an input/output parameter. If its <paramref name="field"/>
/// member contains an enum value specifying a field on input, then its
/// <c>BeginIndex</c> and <c>EndIndex</c> members will be updated with the
/// text offset of the first occurrence of this field in the formatted text.
/// </summary>
/// <param name="obj">the object to format.</param>
/// <param name="buffer">the string buffer where the formatted string is appended to.</param>
/// <param name="field">on input: an optional alignment field; on output: the offsets
/// of the alignment field in the formatted text.</param>
/// <returns>The <see cref="StringBuffer"/>.</returns>
/// <exception cref="ArgumentException">If the object cannot be formatted by this format.</exception>
public abstract StringBuffer Format(object obj, StringBuffer buffer,
FieldPosition field);
/// <summary>
/// Appends the string associated with the range in which the specified <see cref="long"/>
/// value fits to the specified string <paramref name="buffer"/>.
/// </summary>
/// <param name="value">The <see cref="long"/> to format.</param>
/// <param name="buffer">The target string buffer to append the formatted value to.</param>
/// <param name="field">A <see cref="FieldPosition"/> which is ignored.</param>
/// <returns>The <see cref="StringBuffer"/>.</returns>
//@Override
public StringBuffer Format(long value, StringBuffer buffer, FieldPosition field)
{
return(Format((double)value, buffer, field));
}