fitgoodies-core/src/main/java/de/cologneintelligence/fitgoodies/Fixture.java
public String getArg(final String argName, final String defaultValue) {
        if (args == null || !args.containsKey(argName)) {
            return defaultValue;
        } else {
            return validator.preProcess(args.get(argName));
        }
    }
public String getArg(final String argName, final String defaultValue) {
        if (args == null || !args.containsKey(argName)) {
            return defaultValue;
        } else {
            return validator.preProcess(args.get(argName));
        }
    }
Finds an argument in an given argument list.
<p>
The search for an argument is case-insensitive and whitespaces at the
beginning and the end are ignored. The argument's name and its value are
separated by an equal sign. All these inputs will result in
&quot;world&quot;, if you look up &quot;hello&quot;:
<p>
&quot;hello=world&quot;, &quot; hello = world &quot;,
&quot;HeLLo = world&quot;.</p>
<p>
Note: the case of the value is unchanged.

@param argName      the argument name to look up
@param defaultValue the result value if the argument does not exist
@return the argument's value without namespaces, or defaultValue
@see #getArgNames() getArgs
@see #copyParamsToFixture() copyParamsToFixture