pub fn layout_flowchart_v2(
semantic: &Value,
effective_config: &MermaidConfig,
measurer: &dyn TextMeasurer,
math_renderer: Option<&(dyn MathRenderer + Send + Sync)>,
) -> Result<FlowchartV2Layout>pub fn layout_flowchart_v2(
semantic: &Value,
effective_config: &MermaidConfig,
measurer: &dyn TextMeasurer,
math_renderer: Option<&(dyn MathRenderer + Send + Sync)>,
) -> Result<FlowchartV2Layout>