ContextHubInfo: Optimize toString()

    @NonNull

    @Override

    public String toString() {

        String retVal = "";

        retVal += "ID/handle : " + mId;

        retVal += ", Name : " + mName;

        retVal += "\n\tVendor : " + mVendor;

        retVal += ", Toolchain : " + mToolchain;

        retVal += ", Toolchain version: 0x" + Integer.toHexString(mToolchainVersion);

        retVal += "\n\tPlatformVersion : 0x" + Integer.toHexString(mPlatformVersion);

        retVal += ", SwVersion : "

                + Byte.toUnsignedInt(mChreApiMajorVersion) + "." + Byte.toUnsignedInt(

                mChreApiMinorVersion) + "." + Short.toUnsignedInt(mChrePatchVersion);

        retVal += ", CHRE platform ID: 0x" + Long.toHexString(mChrePlatformId);

        retVal += "\n\tPeakMips : " + mPeakMips;

        retVal += ", StoppedPowerDraw : " + mStoppedPowerDrawMw + " mW";

        retVal += ", PeakPowerDraw : " + mPeakPowerDrawMw + " mW";

        retVal += ", MaxPacketLength : " + mMaxPacketLengthBytes + " Bytes";

        retVal += ", SupportsReliableMessage : " + mSupportsReliableMessages;

        return retVal;

        StringBuilder out = new StringBuilder();

        out.append("ID/handle : ");

        out.append(mId);

        out.append(", Name : ");

        out.append(mName);

        out.append("\n\tVendor : ");

        out.append(mVendor);

        out.append(", Toolchain : ");

        out.append(mToolchain);

        out.append(", Toolchain version: 0x");

        out.append(Integer.toHexString(mToolchainVersion));

        out.append("\n\tPlatformVersion : 0x");

        out.append(Integer.toHexString(mPlatformVersion));

        out.append(", SwVersion : ");

        out.append(Byte.toUnsignedInt(mChreApiMajorVersion));

        out.append(".");

        out.append(Byte.toUnsignedInt(mChreApiMinorVersion));

        out.append(".");

        out.append(Short.toUnsignedInt(mChrePatchVersion));

        out.append(", CHRE platform ID: 0x");

        out.append(Long.toHexString(mChrePlatformId));

        out.append("\n\tPeakMips : ");

        out.append(mPeakMips);

        out.append(", StoppedPowerDraw : ");

        out.append(mStoppedPowerDrawMw);

        out.append(" mW, PeakPowerDraw : ");

        out.append(mPeakPowerDrawMw);

        out.append(" mW, MaxPacketLength : ");

        out.append(mMaxPacketLengthBytes);

        out.append(" Bytes, SupportsReliableMessages : ");

        out.append(mSupportsReliableMessages);

        return out.toString();

    }

    /**