Retrieve the method with the given selector in the given class.
{
"selector": "string",
"methodClass": "string",
"category": "string",
"source": "string",
"author": "string",
"timestamp": "string",
"package": "string",
"needsRecompilation": "boolean",
"overriding": "boolean",
"overriden": "boolean",
"bytecodes": "string",
"disassembly": "string",
"ast": "node",
"annotations": ["annotation"]
}
{
"selector": "isFraction",
"methodClass": "Fraction",
"category": "converting",
"package": "Kernel",
"source": "isFraction\r\t^ true",
"author": "",
"timestamp": "",
"overriding": true,
"overriden": true
}