toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() {
  final $buf = StringBuffer()
    ..writeln('TreasuryReceivedCreditsResourceLinkedFlows(');
  if (creditReversal != null) {
    $buf
      ..writeln()
      ..write('  credit_reversal: ')
      ..write(creditReversal)
      ..write(',');
  }
  if (issuingAuthorization != null) {
    $buf
      ..writeln()
      ..write('  issuing_authorization: ')
      ..write(issuingAuthorization)
      ..write(',');
  }
  if (issuingTransaction != null) {
    $buf
      ..writeln()
      ..write('  issuing_transaction: ')
      ..write(issuingTransaction)
      ..write(',');
  }
  if (sourceFlow != null) {
    $buf
      ..writeln()
      ..write('  source_flow: ')
      ..write(sourceFlow)
      ..write(',');
  }
  if (sourceFlowDetails != null) {
    $buf
      ..writeln()
      ..write('  source_flow_details: ')
      ..write(sourceFlowDetails)
      ..write(',');
  }
  if (sourceFlowType != null) {
    $buf
      ..writeln()
      ..write('  source_flow_type: ')
      ..write(sourceFlowType)
      ..write(',');
  }
  $buf.write(')');
  return $buf.toString();
}