Function on_solid_boundary_besides 

pub fn on_solid_boundary_besides(
    model: &Model,
    solid_id: SolidId,
    face_id: FaceId,
    point: &Vector3,
    max_nodes: usize,
    epsilon: Scalar,
    seed: u64,
) -> GeopResult<bool>

Whether point, a point inside face face_id of the solid solid_id, is on the solid’s boundary anywhere else as well: on a vertex, on an edge, or on another face, of any of its shells. A body touching the face at a point leaves a vertex of its own in the face’s interior with no topology between them: an inscribed sphere’s pole on the cube’s face. Other arguments as for shell_contains.