code: public static CsvSchema buildSchema(List<String> headers, boolean useHeader) {
  		return CsvSchema.builder().addColumns(headers, ColumnType.STRING).setUseHeader(useHeader).build();
  	}
docs: Build a {@link CsvSchema} object using the given headers.
  
  @param headers
  The list of strings in the header.
  @param useHeader
  Set to false to avoid writing the header line, which is necessary
  if appending to an existing file.
  @return A {@link CsvSchema} object including the given header items.