Content-Type: text/html
Content-Length: 822

1. {
"a":"1",
"b":"2",
"c":"3",
"d":"4"
}
{
"a":"1",
"b":"2",
"c":"3",
"d":"4"
}
2. {
"a":"1",
"x":"2",
"c":"3",
"d":"4"
}
{
"x":"1",
"b":"2",
"c":"3",
"d":"4"
}
{
"a":"1",
"b":"2",
"c":"3",
"x":"4"
}
3. {
"c":"1",
"b":"2",
"d":"4"
}
{
"b":"2",
"c":"3",
"a":"4"
}
{
"a":"1",
"c":"2",
"d":"4"
}
4. {
"d":"1"
}
{
"a1":"1",
"b1":"2",
"c1":"3",
"d":"4"
}
5. {
"":"1",
"b":"2",
"c":"3",
"d":"4"
}
{
"a":"1",
"":"2",
"c":"3",
"d":"4"
}
{
"":"3",
"d":"4"
}
6. Type: parser.runtime,
Source: rename,
Comment: single parameter must have hash representation (parameter #1)
Type: parser.runtime,
Source: rename,
Comment: from key must be string (parameter #1)
Type: parser.runtime,
Source: rename,
Comment: to key must be string (parameter #2)
Type: parser.runtime,
Source: rename,
Comment: is 'hash', it has no string representation