Parallel
data class ParallelTxsComponentXdr(val baseFee: Int64Xdr?, val executionStages: List<ParallelTxExecutionStageXdr>)
XDR Source: struct ParallelTxsComponent { int64* baseFee; // A sequence of stages that may have arbitrary data dependencies between // each other, i.e. in a general case the stage execution order may not be // arbitrarily shuffled without affecting the end result. ParallelTxExecutionStage executionStages<>; };