microsoft-azure-storage/src/com/microsoft/azure/storage/core/Utility.java
public static void assertNotNull(final String param, final Object value) {
        if (value == null) {
            throw new IllegalArgumentException(String.format(Utility.LOCALE_US, SR.ARGUMENT_NULL_OR_EMPTY, param));
        }
    }
public static void assertNotNull(final String param, final Object value) {
        if (value == null) {
            throw new IllegalArgumentException(String.format(Utility.LOCALE_US, SR.ARGUMENT_NULL_OR_EMPTY, param));
        }
    }
Asserts that a value is not <code>null</code>.

@param param
A <code>String</code> that represents the name of the parameter, which becomes the exception message
text if the <code>value</code> parameter is <code>null</code>.
@param value
An <code>Object</code> object that represents the value of the specified parameter. This is the value
being asserted as not <code>null</code>.