zendframework / zend-coding-standard / 46

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ReturnType sniff - PHP 7 and 7.1 (nullable types)

Return type has to be formated as following:
```
function method(): ?array
{
}
```
So:
- no space before colon
- single space after colon
- no space after nullable op (?), if present

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2245 of 2518 relevant lines covered (89.16%)

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