@Nullable
	public String getStringValue(@IntRange(from = 0) final int offset) {
		if (mValue == null || offset > mValue.length)
			return null;
		final byte[] strBytes = new byte[mValue.length - offset];
		if (mValue.length - offset >= 0)
			System.arraycopy(mValue, offset, strBytes, 0, mValue.length - offset);
		return new String(strBytes);
	}
Return the stored value of this characteristic.
<p>See {@link #getValue} for details.

@param offset Offset at which the string value can be found.
@return Cached value of the characteristic
ble/src/main/java/no/nordicsemi/android/ble/data/Data.java