I don't know Rust well, is this what's known as a query builder in Rust? That's weird to me, because in other typed languages that I know, query builders are ty

I don't know Rust well, is this what's known as a query builder in Rust? That's weird to me, because in other typed languages that I know, query builders are typically typesafe and don't just concatenate strings (see e.g. jOOQ for the JVM).