/**
* @dev This function encodes a function signature and returns it.
* @notice There are no spaces between the parameters types, and the
* parameters names are not included when encoding.
* @return bytes4 : The encoded function signature.
*/
function encodingFunctionSignature()
	public
	returns(bytes4)
{
	bytes4 encodedSignature = bytes4(keccak256("aFunction(string,uint256)"));
	return encodedSignature;
}