String getValue() {
        return delegate.getValue()
    }

    @Override
    protected void doLineText(CharSequence text) {
        delegate.text(text)
    }

    @Override
    protected void doEndLine(CharSequence endOfLine) {
        delegate.text("\n")
    }

     */
    protected abstract void doLineText(CharSequence text);

    /**
     * Called when end of line is to be appended.
     */
    protected abstract void doEndLine(CharSequence endOfLine);

    private interface State extends Action<StateContext> {}

    private class StateContext {

        if (!prefixed && prefixFirstLine) {
            output.text(prefix);
            prefixed = true;
        }
        output.text(text);
    }

    @Override
    protected void doEndLine(CharSequence endOfLine) {
        output.text(endOfLine);
    }

    @Override
    protected void doStartLine() {
        output.text(prefix);
    }

    @Override

                            }
                        }
                    }
                });
            }
        });
    }

    @Override
    protected void doEndLine(CharSequence endOfLine) {
        ansiExecutor.writeAt(writePos, NEW_LINE_ACTION);
    }

        }
        this.style = style;
    }

    @Override
    protected void doLineText(CharSequence text) {
        buffer.append(text);
    }

    @Override
    protected void doEndLine(CharSequence endOfLine) {
        buffer.append(endOfLine);
        spans.add(new StyledTextOutputEvent.Span(this.style, buffer.toString()));
        buffer.setLength(0);

        }

        @Override
        protected void doLineText(CharSequence text) {
            textOutput.text(text);
            atEndOfLine = false;
        }

        @Override
        protected void doEndLine(CharSequence endOfLine) {
            textOutput.text(endOfLine);
            atEndOfLine = true;
        }
    }

                result.append("[")
                result.append(text)
                result.append("]")
            }

            @Override
            protected void doEndLine(CharSequence endOfLine) {
                assert endOfLine in [System.getProperty("line.separator"), NIX_EOL, WINDOWS_EOL]
                result.append("{eol}")
            }
        }
        return output
    }