Function conditional 

pub fn conditional(
    predicate: impl Fn(&Value) -> bool + Send + Sync + 'static,
    if_true: impl Into<Composable>,
    if_false: impl Into<Composable>,
) -> Composable

Conditional: run one of two workflows, chosen by a state predicate.

predicate sees the state (as a JSON object) when the compiled agent runs. If it returns true, if_true runs; otherwise if_false runs. Exactly one branch runs, and each branch keeps its full configuration.

Arguments

• predicate — Function that inspects state (as serde_json::Value) and returns a bool.
• if_true — Agent or workflow to run when the predicate is true.
• if_false — Agent or workflow to run when the predicate is false.

Example

let routed = conditional(
    |state| state.get("premium").and_then(|v| v.as_bool()).unwrap_or(false),
    AgentBuilder::new("premium-agent").instruction("Full-featured response"),
    AgentBuilder::new("basic-agent").instruction("Basic response"),
);
assert!(matches!(routed, Composable::Branch(_)));