Source constructor
Source({})
Implementation
Source(
{this.object,
this.receiver,
this.achCreditTransfer,
this.amount,
this.clientSecret,
this.created,
this.currency,
this.flow,
this.sourceId,
this.livemode,
this.metadata,
this.owner,
this.statementDescriptor,
this.status,
this.type,
this.usage});