}
        return bootstrapClasspath;
    }

    public void setBootstrapClasspath(FileCollection classpath) {
        internalGetBootstrapClasspath().setFrom(classpath);
    }

    public void setBootstrapClasspath(Object... classpath) {
        internalGetBootstrapClasspath().setFrom(classpath);
    }

        return bootstrapClasspath;
    }

    /**
     * Sets the bootstrap classpath to be used for the compiler process. Defaults to {@code null}.
     *
     * @since 4.3
     */
    public void setBootstrapClasspath(@Nullable FileCollection bootstrapClasspath) {
        this.bootstrapClasspath = bootstrapClasspath;
    }

    /**
     * Returns the extension dirs to be used for the compiler process. Defaults to {@code null}.