Path getSrcDirPath()
    {
        return srcDir.toPath();
    }
Creates a new Cargo.toml file.
<p>
@return a {@link java.io.Writer} to which the crate definition should be written.
@throws IOException if an issue occurs when creating the file.
sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/rust/RustOutputManager.java