doc.put("doubleStr", "123.45");
        assertEquals(Double.valueOf(123.45), DocumentUtil.getValue(doc, "doubleStr", Double.class));

        doc.put("floatStr", "123.45");
        assertEquals(Float.valueOf(123.45f), DocumentUtil.getValue(doc, "floatStr", Float.class));

        doc.put("boolStr", "true");
        assertEquals(Boolean.TRUE, DocumentUtil.getValue(doc, "boolStr", Boolean.class));

<code>real</code> and <code>imag</code>
extract the real and imaginary parts of a complex value.
</p>

<pre class="grammar">
complex(realPart, imaginaryPart floatT) complexT
real(complexT) floatT
imag(complexT) floatT
</pre>

<p>
The type of the arguments and return value correspond.
For <code>complex</code>, the two arguments must be of the same