Code duplication in RtTransaction

[Vatavuk]

We have code duplication in RtTransaction. Each method parses transaction string in a same manner:

final String value = new UncheckedText(
    new IoCheckedScalar<>(
        new ItemAt<>(
            index, new SplitText(this.transaction, ";")
        )
    ).value()
).asString();

We can extract this to a method or a class.
Furthermore we can simplify the above example to:

final String ident = new IoCheckedScalar<>(
    () -> new ItemAt<>(0, new SplitText(this.transaction, ";"))
        .value().asString()
).value();

[0crat]

@llorllale/z please, pay attention to this issue

[victornoel]

@Vatavuk yes, or we could merge it with the pattern matching that follows and match the whole string instead of first splitting it by ;.
Check yegor256/cactoos#941 that I opened in cactoos that is related too.

[llorllale]

@Vatavuk let's wait for yegor256/cactoos#941