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Code Duplication    Length = 9-9 lines in 2 locations

src/Operator.php 2 locations

@@ 198-206 (lines=9) @@
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        }
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        // scalar value or array in existed field
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        if (!is_array($this->_operators['$addToSet'][$field]) || !isset($this->_operators['$addToSet'][$field]['$each'])) {
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            $this->_operators['$addToSet'][$field] = array(
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                '$each' => array(
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                    $this->_operators['$addToSet'][$field],
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                    $value,
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                ),
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            );
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            return $this;
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        }
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        // field already $each
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        $this->_operators['$addToSet'][$field]['$each'][] = $value;
@@ 223-231 (lines=9) @@
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        }
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        // scalar value or array in existed field
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        if (!is_array($this->_operators['$addToSet'][$field]) || !isset($this->_operators['$addToSet'][$field]['$each'])) {
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            $this->_operators['$addToSet'][$field] = array(
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                '$each' => array_merge(
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                    [$this->_operators['$addToSet'][$field]],
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                    $values
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                ),
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            );
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            return $this;
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        }
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        // field already $each
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        $this->_operators['$addToSet'][$field] = array(