Function analyzeMethodResponsibility

analyzeMethodResponsibility(
methodName: string,
methodBody: string | undefined,
): Set<string>
Analyzes a method to determine its responsibilities based on:
1. Method name pattern matching (using RESPONSIBILITY_PATTERNS)
2. Method body analysis (RxJS, JSON operations)
Parameters
- methodName: string
  The name of the method to analyze
- methodBody: string | undefined
  Optional method body source code for deeper analysis
Returns Set<string>
Set of responsibility identifiers (e.g., 'event-handling', 'data-retrieval')
Example
```
// Detect from method name only
analyzeMethodResponsibility('getUsers', undefined);
// Returns: Set(['data-retrieval'])

// Detect from method body
analyzeMethodResponsibility('notifyChange', 'this.subject.next(data);');
// Returns: Set(['event-handling'])

// Detect multiple responsibilities
analyzeMethodResponsibility('processData', 'this.subject.next(JSON.parse(data));');
// Returns: Set(['event-handling', 'transformation'])
```