toFloat32Array() {
        let n = this.tryPeekCount();
        if (n === undefined) {
            return new Float32Array(this.toArray());
        }

        let buf = new Float32Array(n);
        let i = 0;
        for (let item of this._iterable) {
            buf[i++] = item;
        }
        return buf;
    }
Returns a Float32Array containing the items of this sequence.
@returns {!Float32Array}